Python is a very simple programming language. To me, it was just some procedural concepts along with some object oriented features support like attributes and functions of a certain type of object.

Mostly I learned from Google's python class here. Solving the exercises was fun. It is easy once you put in some time.
I got to learn about regular expressions. That was fun.
Will keep on updating cool understandings as and when I get to see something really cool in python.

I basically use python to test whether my code is clean to submit into the code repository because it provides support for regular languages.